Wireless charger



FIG. 1 is a front, right and top perspective view of a wireless charger showing my new design;

FIG. 2 is a rear, left and bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is bottom plan view thereof.

The broken line showing of the wireless charger is for the purpose of illustrating article and forms no part of the claimed design. 

CLAIM The ornamental design for a wireless charger, as shown and described. 